
BS 7593 Water Testing
What the BS 7593 standard means for your heating system, and why we test your system water on every boiler service and every new installation.
What It Means for Your Heating System
The BS 7593:2019 standard is the official industry guideline for how central heating systems should be cleaned, protected and maintained. It applies to all boilers, gas or oil, and all wet central heating systems, whether brand new or already installed in your home.
At Billericay Heating, we follow this standard on every boiler service and every new installation because it ensures your system runs safely, efficiently and reliably for years to come.
Gas Safe
Registered engineers
OFTEC
Registered for oil
Free
No-obligation quotes
- Gas and oil boilers
- New and existing wet central heating systems
- Part of every boiler service and installation
- Water test PASS certificate

Why Has the Standard Changed?
Modern boilers are more efficient than ever, but they're also more sensitive to poor water quality.
Even small amounts of sludge, rust or debris can cause
Cold spots on radiators
Noisy pipes or kettling
Reduced efficiency and higher bills
Premature boiler breakdowns
Voided manufacturer warranties
The updated BS 7593 standard recognises this and now requires regular water testing and ongoing system protection, not just a one-off clean when the boiler is installed.
How BS 7593 protects your home
Following this standard means your heating system benefits from:
- Better efficiency
- Your boiler doesn't have to work as hard.
- Lower energy bills
- Clean water means smoother heat transfer.
- Longer boiler lifespan
- Reduced wear and tear.
- Fewer breakdowns
- Problems are caught early.
- Valid warranties
- Most manufacturers now require water testing.
It's a small step that makes a big difference to your comfort and safety.
What We Check During Your BS 7593 Water Test
During your boiler service, our engineers carry out a quick but essential water quality test to make sure your system is healthy and protected.
If your system fails, we'll advise on the remedial work it needs, such as an ADEY MagnaCleanse system flush, then retest and certify it once it meets the standard.
About MagnaCleanse system cleaningInhibitor levels
We check the level of inhibitor, the chemical that prevents corrosion.
Sludge, debris and corrosion
We test for sludge, debris or corrosion particles.
Cleaning or flushing
We assess whether the system needs cleaning or flushing.
System filters
We make sure filters are working correctly.
Warranty requirements
We confirm your system meets manufacturer warranty requirements.
This test helps us spot issues early, long before they turn into expensive repairs.
Billericay Heating's Commitment to BS 7593
We take system health seriously. We're here to keep your heating running smoothly, safely and efficiently.
A BS 7593-compliant water test on every service we carry out
Honest advice based on the results
Clear recommendations if your system needs treatment
No unnecessary work, just what's genuinely needed to protect your home
Local, trusted, Gas Safe engineers

Frequently Asked Questions
Answers to common questions about our heating and plumbing work.
Related Services

Boiler Servicing
A full annual inspection that keeps your boiler safe and efficient, with a BS 7593 water test and Gas Safe certificate.

Powerflush & MagnaCleanse
The modern, safer alternative to power flushing: a low-pressure ADEY MagnaCleanse system flush that cleans each radiator individually.

Boiler System Filters
Professionally installed magnetic system filters that catch sludge before it reaches your boiler.
Book Your BS 7593 Water Test & Boiler Service
Keeping your heating system healthy has never been more important. Book your annual service with Billericay Heating and enjoy complete peace of mind.
